Thermal Energy Demonstration

Sixth-grade science students saw an example this week of what a quick change in temperature can cause. Liquid Nitrogen is colder than –200 degrees Celsius, and when it contacts warmer masses, it boils and rapidly converts to gas, greatly expanding in volume. In an enclosed space, such as a water bottle with a cap, it will cause an explosion that is powerful enough to blow a plastic bucket high in the air. That’s the fun part. Watch the video to enjoy the effects of the Second Law of Thermodynamics: Heat moves from a warmer mass to a cooler one.
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